Complementary DNA sequences

• Each base on one strand pairs up with its complementary base on the other strand
• The structure of DNA consists of two strands twisted around one another forming a double helix, with nucleotides joined by hydrogen bonds between complementary bases (A-T & C-G)
• DNA is the genetic material that contains all the information needed to build an organism
• The sequence of bases is read from left to right, starting at the end where there are no unpaired bases (the 3’ end)
• DNA replication occurs by semi-conservative replication
• DNA is found in all living organisms as it contains genetic information that codes for proteins.
• Ribonucleic acid (RNA) is similar to DNA but has some differences:
• RNA is single stranded whereas DNA is double stranded